It took a bit of time due to the holidays, but KOffice
2.3.0 is finally
available from Debian experimental (give some hours to your mirror to
sync!). If you are unstable user don't be afraid to fetch it from
experimental, it is there only because the Squeeze freeze. Squeeze will
ship with KOffice 2.2.1, while not all the applications are so polished
as it would be desirable, it clearly offers huge improvements over old
KOffice 1.6.3.

I do not know if there will be a KOffice 2.3.1 upload but I know for
sure the future is with Calligra :)